ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
77 lines
2.0 KiB
Markdown
77 lines
2.0 KiB
Markdown
---
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id: 587d7db9367417b2b2512ba4
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title: 匹配非空白字符
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challengeType: 1
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forumTopicId: 18210
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dashedName: match-non-whitespace-characters
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---
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# --description--
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已经学会了如何使用带有小写`s`的缩写`\s`来搜寻空白字符。还可以搜寻除了空格之外的所有内容。
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使用`\S`搜寻非空白字符，其中`S`是大写。此匹配模式将不匹配空格、回车符、制表符、换页符和换行符。可以认为这类似于元字符`[^\r\t\f\n\v]`。
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```js
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let whiteSpace = "Whitespace. Whitespace everywhere!"
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let nonSpaceRegex = /\S/g;
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whiteSpace.match(nonSpaceRegex).length; // Returns 32
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```
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# --instructions--
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修改正则表达式`countNonWhiteSpace`以查找字符串中的多个非空字符。
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# --hints--
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你的正则表达式应该使用全局状态修正符。
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```js
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assert(countNonWhiteSpace.global);
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```
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正则表达式应该使用元字符 <code>\\S/code> 来匹配所有的非空格字符。
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```js
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assert(/\\S/.test(countNonWhiteSpace.source));
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```
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你的正则表达式应该在`'Men are from Mars and women are from Venus.'`中匹配到 35 个非空白字符。
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```js
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assert(
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'Men are from Mars and women are from Venus.'.match(countNonWhiteSpace)
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.length == 35
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);
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```
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你的正则表达式应该在`"Space: the final frontier."`中匹配到 23 个非空白字符。
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```js
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assert('Space: the final frontier.'.match(countNonWhiteSpace).length == 23);
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```
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你的正则表达式应该在`'MindYourPersonalSpace'`中匹配到 21 个非空白字符。
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```js
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assert('MindYourPersonalSpace'.match(countNonWhiteSpace).length == 21);
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```
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# --seed--
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## --seed-contents--
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```js
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let sample = "Whitespace is important in separating words";
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let countNonWhiteSpace = /change/; // Change this line
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let result = sample.match(countNonWhiteSpace);
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```
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# --solutions--
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```js
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let sample = "Whitespace is important in separating words";
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let countNonWhiteSpace = /\S/g; // Change this line
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let result = sample.match(countNonWhiteSpace);
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```
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